Norwegian Broadcasting Corp. finds a way to weed out toxic commentary: Take a quiz.

Many large media organizations eliminated their comment sections because of abusive commentary, writes Steve Friess. The Guardian, for example, last year closed comments under articles on race, immigration and Islam because they attract “unacceptable levels of toxic commentary.”

A short quiz on the contents of a story, the Norwegian brainstorm, unlocks access to the comments section.

“We wanted to create a bump in the road to make people think a bit before ranting away,” a source tells Friess.